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T89C51AC2-RLSI-M 数据表(PDF) 66 Page - ATMEL Corporation |
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T89C51AC2-RLSI-M 数据表(HTML) 66 Page - ATMEL Corporation |
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66 / 117 page ![]() 66 Draft.A - March 30, 2001 Preview - Confidential T89C51AC2 • Enter a 16-bit initial value in timer registers TH2/TL2. It can be the same as the reload value or different depending on the application. • To start the timer, set TR2 run control bit in T2CON register. It is possible to use timer 2 as a baud rate generator and a clock generator simultaneously. For this configuration, the baud rates and clock frequencies are not independent since both functions use the values in the RCAP2H and RCAP2L registers. Figure 54. Clock-Out Mode :2 EXEN2 EXF2 OVER- FLOW T2EX TH2 (8-bit) TL2 (8-bit) TIMER 2 RCAP2 (8-bit) RCAP2 (8-bit) T2OE T2 T2CON reg T2CON reg T2MOD reg 1 0 C/T2 T2CON reg INTERRUPT 0 1 CT/2 T2CON.1 TR2 T2CON.2 FT2 CLOCK |
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